This weight-loss app uses tough love to get you fit

Carrot Fit is a new app that will reward you if you meet your weight-loss goals, but seriously chew you out if you slip up.

The brainchild of iOS developer Grailr, Carrot Fit knows more than 2,000 phrases —some kind and some cruel — thanks to iOS 7's new text-to-speech capabilities. Users enter their current weight when they download the app, and are given rewards such as workout tips and cat facts if they shed pounds. If users gain weight back, however, the app gives them a tongue-lashing.

“Meatbags,” as the app refers to users, can set reminders to avoid missing a weigh-in, share their progress with friends and check their body mass index, among other features. Future updates of Carrot Fit will include features such as a six-minute workout and the ominous-sounding Deathmarch 5K, according to the product’s description in the iTunes store.

Carrot Fit is the latest in a line of apps from Grailr, which includes a mouthy to-do list and an interactive, loose-lipped alarm clock.

Download the app, which costs $1.99, in the iTunes store — if you dare.